Hello,
you mentioned already some of the best ways to drive traffic to a site.
Anyway I add the services that deliver traffic to your site selling you the so called full page popunder ads.
This mean that they generates a guaranteed amount of unique visitors, but they are no way deciding to see your site, so only a minority of them can be interested in your products or services.
If you want I provide you a couple of links so you can directly see what this promotional resource is:
http://www.hitzpro.com/
http://www.buyhitscheap.com/
There is also ezine advertising and regularly posting to safelists, but there are so many I don't dare to give you direct links.